82936340591 has 4 divisors (see below), whose sum is σ = 89316059112. Its totient is φ = 76556622072.

The previous prime is 82936340581. The next prime is 82936340611. The reversal of 82936340591 is 19504363928.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82936340591 - 2³⁰ = 81862598767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82936340521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3189859241 + ... + 3189859266.

It is an arithmetic number, because the mean of its divisors is an integer number (22329014778).

Almost surely, 2^82936340591 is an apocalyptic number.

82936340591 is a deficient number, since it is larger than the sum of its proper divisors (6379718521).

82936340591 is a wasteful number, since it uses less digits than its factorization.

82936340591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6379718520.

The product of its (nonzero) digits is 1399680, while the sum is 50.

The spelling of 82936340591 in words is "eighty-two billion, nine hundred thirty-six million, three hundred forty thousand, five hundred ninety-one".